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Finding the Fourth Proportional to 488,902.11, 734,475.96 and 345,138.45

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Solution

The fourth proportional to 488,902.11, 734,475.96 and 345,138.45 is: 518,500.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,902.11 : 734,475.96 = 345,138.45 : x
  2. Step 2: Convert to fraction form
    488,902.11/734,475.96 = 345,138.45/x
  3. Step 3: Cross multiply
    488,902.11x = 734,475.96 × 345,138.45
  4. Step 4: Simplify right side
    488,902.11x = 253,495,894,396.66
  5. Step 5: Solve for x
    x = 253,495,894,396.66/488,902.11
  6. Step 6: Final answer
    x = 518,500.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.